Journal
JOURNAL OF VETERINARY SCIENCE
Volume 11, Issue 3, Pages 197-203Publisher
KOREAN SOC VETERINARY SCIENCE
DOI: 10.4142/jvs.2010.11.3.197
Keywords
Haemaphysalis Flava; Haemaphysalis longicornis; Korea; tick; tick-borne encephalitis virus
Categories
Funding
- BK21 Program for Veterinary Science
- Armed Forces Health Surveillance Center
- Global Emerging Infections Surveillance and Response System, Silver Spring, MD
- National Center for Military Intelligence, Fort Detrick, MD
- Fund of Korea Centers for Disease Control and Prevention [2007-N00308-00]
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The prevalence of tick-borne encephalitis virus (TBEV) in southern Korea was determined by collecting ticks using tick drags. A total of 4,077 of 6,788 ticks collected were pooled (649 pools) according to collection site, species, and developmental stage and assayed for THEY. The THEY protein E and NS5 gene fragments were detected using RT-nested PCR in six pools of nymphs collected from Jeju Island (2,491 ticks). The minimum field detection rates for TBEV were 0.17% and 0.14% for Haemaphysalis longicornis and Haemayphysalis flava nymphs, respectively. The 252 bp NS5 and 477 bp protein E gene amplicons were sequenced. Phylogenetic analysis showed that the NS5 and protein E genes of the Jeju strain were clustered with Western subtype (98.0% and 99.4% identity, respectively). The Western subtype of THEY is endemic in Korea, including Jeju Island. The study of vector and zoonotic host susceptibility to TBEV is required to better understand its potential impact on public health.
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